Bio-based films from wheat bran feruloylated arabinoxylan: Effect of extraction technique, acetylation and feruloylation. (15th December 2020)

• Record Type: Journal Article
• Authors: Yilmaz-Turan, Secil; Jiménez-Quero, Amparo; Menzel, Carolin; de Carvalho, Danila Morais; Lindström, Mikael E.; Sevastyanova, Olena; Moriana, Rosana; Vilaplana, Francisco
• Is Part Of: Carbohydrate polymers. Volume 250(2020)
• Publication Date: 2020-12-15
• Subjects: Arabinoxylan -- Wheat bran -- Subcritical water extraction -- Ferulic acid -- Acetylation -- Barrier properties -- Antioxidant activity; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2020.116916
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Film properties of native and acetylated feruloylated arabinoxylans were compared. Higher degree of substitution and molecular weight favored film material properties. Bound feruloylated arabinoxylan films showed significant scavenging activity. Acetylation improved thermal stability of arabinoxylans. Film properties can be tailored by tuning the structural features of arabinoxylans. Abstract: This study demonstrates the potential of feruloylated arabinoxylan (AX) from wheat bran for the preparation of bioactive barrier films with antioxidant properties. We have comprehensively evaluated the influence of the structural features and chemical acetylation of feruloylated AX extracted by subcritical water on their film properties, in comparison with alkaline extracted AX and a reference wheat endosperm AX. The degree of substitution (DS) of AX had a large influence on film formation, higher DS yielded better thermal and mechanical properties. The barrier properties of AX films were significantly enhanced by external plasticization by sorbitol. Chemical acetylation significantly improved the thermal stability but not the mechanical or barrier properties of the films. The presence of bound ferulic acid in feruloylated AX films resulted in higher antioxidant activity compared to external addition of free ferulic acid, which demonstrates their potential use in active packaging applications for the preservation of oxygen-sensitive foodstuff.